Trends in birth rates in the United States since 1870.
| Huvudupphovsman: | |
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| Materialtyp: | Bok |
| Språk: | English |
| Publicerad: |
Baltimore
Johns Hopkins Press
1958.
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| Serie: | The Johns Hopkins University studies in historical and political science
ser. 76, no. 1 |
| Ämnen: |